You can split cells into columns in Excel using the "Text to Columns" tool, which is a great way to organize lots of data.

Microsoft Excel and Google Sheets are programs that allow users to arrange and make sense of a great deal of data. This information can be ordered into neat, color-coordinated columns and rows (using ...

You can lock cells in Excel by heading into the program's "Protection" tab. There, you can set a password, and protect your data.